Merge branch 'drm-next-4.21' of git://people.freedesktop.org/~agd5f/linux into drm...

Merge branch 'drm-next-4.21' of git://people.freedesktop.org/~agd5f/linux into drm-next

[airlied: make etnaviv build again]

amdgpu:
- DC trace support
- More DC documentation
- XGMI hive reset support
- Rework IH interaction with KFD
- Misc fixes and cleanups
- Powerplay updates for newer polaris variants
- Add cursor plane update fast path
- Enable gpu reset by default on CI parts
- Fix config with KFD/HSA not enabled

amdkfd:
- Limit vram overcommit
- dmabuf support
- Support for doorbell BOs

ttm:
- Support for simultaneous submissions to multiple engines

scheduler:
- Add helpers for hw with preemption support

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181207233119.16861-1-alexander.deucher@amd.com